<template>
    <div>
        <div id="slider" class="mui-slider">
            <div id="sliderSegmentedControl" class="mui-scroll-wrapper mui-slider-indicator mui-segmented-control mui-segmented-control-inverted">
                <div class="mui-scroll">
                    <a :class="['mui-control-item', item.id == 0 ? 'mui-active' : '']" v-for="item in cates" :key="item.id" @tap="getimagelist(item.id)">
                        {{item.title}}
                    </a>
                </div>
            </div>
        </div>
        <!--图片列表区域-->
        <ul class="photo_list">
            <router-link v-for="item in list" :key="item.id" tag="li" :to="'/home/photosinfo' + item.id">
                <img v-lazy="item.img_url" >
                 <div class="info">
                    <h1 class="info-title">{{ item.title }}</h1>
                    <div class="info-body">{{ item.zhaiyao }}</div>
                </div>
            </router-link>
        </ul>
    </div>
</template>

<script>
// 1. 导入 mui 的js文件
import mui from "../../lib/mui/js/mui.min.js";
export default {
    data () {
        return{
            cates:[],
            list:[]
        }
    },
    created(){
        this.getAllCategory()
        this.getimagelist(0)
    },
    mounted() {
    // 当 组件中的DOM结构被渲染好并放到页面中后，会执行这个 钩子函数
    // 如果要操作元素了，最好在 mounted 里面，因为，这里时候的 DOM 元素 是最新的
    // 2. 初始化滑动控件
    mui(".mui-scroll-wrapper").scroll({
      deceleration: 0.0005 //flick 减速系数，系数越大，滚动速度越慢，滚动距离越小，默认值0.0006
    });
  },
  methods:{
      getAllCategory(){
         this.$http.get('../../static/mock/getimgcategory.json').then(result =>{
               console.log(result.body)
              if(result.body.status===0){
                  result.body.message.unshift({title : "全部", id: 0 })
                  this.cates=result.body.message
                   
              }
          })
      },
      getimagelist (cateid){
          this.$http.get('../../static/mock/getimages.json',[cateid]).then(result =>{
              console.log(result.body)
              if(result.body.status===0){
                 this.list = result.body.message
              }
          })
      }
  }
}
</script>

<style lang="scss" scoped>
* {
  touch-action: pan-y;
}
.photo_list {
    list-style: none;
    padding: 10px;
    margin: 0;
    padding-bottom: 0;
    li{
        background-color: #ccc;
        text-align: center;
        margin-top: 10px;
        box-shadow: 0 0 9px #999;
        position: relative;
        img{
            width: 100%;
            vertical-align: middle;
        }
        img[lazy=loading] {
            width: 40px;
            height: 300px;
            margin: auto;
        }

        .info {
            color: white;
            text-align: left;
            position: absolute;
            bottom: 0;
            background-color: rgba(0, 0, 0, 0.4);
            max-height: 84px;
            .info-title {
                font-size: 14px;
            }
            .info-body {
                font-size: 13px;
            }
        }
    }
}

</style>
